yundewu-website/page_donwload/gulpfile.js

'use strict';
var gulp = require('gulp');//gulp核心
/*var sass = require('gulp-sass');//编译sass*/
var less = require('gulp-less');//编译less
var mincss = require('gulp-clean-css');//压缩css
var minjs = require('gulp-uglify');//压缩JS
var rename = require('gulp-rename');//文件重命名
var watch = require('gulp-watch');//监控文件
var livereload = require('gulp-livereload');//热更新
var plumber = require('gulp-plumber');//提示错误并忽略
/*路径*/
var lessPath = "./less/*.less";
var cssDestPath = "./css";
var jsPath = "./jssrc/*.js";
var jsDestPath = "./js";


//编译sass
gulp.task('less',function(){
    return gulp.src(lessPath)
        .pipe(plumber())
        .pipe(less())
        .pipe(mincss())
        .pipe(rename({
            suffix: ".min"
        }))
        .pipe(gulp.dest(cssDestPath))
        .pipe(livereload());
});

//压缩JS
gulp.task('javascript',function(){
    return gulp.src(jsPath)
        .pipe(plumber())
        .pipe(minjs())
        .pipe(rename({
            suffix:".min"
        }))
        .pipe(gulp.dest(jsDestPath))
        .pipe(livereload())
})
//监测文件
gulp.task('watch',function(){
    gulp.watch(lessPath,gulp.series("less"));
    gulp.watch(jsPath,gulp.series("javascript"));
})


// gulp.task('default',function(){
//     livereload.listen();
//     gulp.series(gulp.parallel("less","javascript","watch"));
//     // gulp.run("less","javascript","watch");
// });
gulp.task('default',gulp.parallel(function(){
    livereload.listen();
},"less","javascript","watch"));